Main Structure
Tube-like depression in the skin or scalp.
What is the Hair Follicle
Outermost layer of hair, like roof shingles.
What is the Cuticle
Of the 20 amino acids that make up hair, a person must obtain ___________of the essential amino acids from daily diet.
What are 9
The cortex contains coloring matter in the form of minute grains of _______________, or pigment.
What is Melanin
What are the cycles.
What is Anagen, Catagen, and Telogen
Thickened, club-shaped structure, lower part of the hair root.
What is Hair Bulb
The innermost layer.
What is Medulla
This substance in the cortex gives natural color to the hair.
What is melanin
Pheomelanin provides natural hair colors from _________________ to yellow and blond tones.
What is Red and Ginger
The loss of hair in round or irregular patches without inflammation is known as
What is Androgenetic Alopecia
Small, coned-shaped elevation located at the base of the hair follicle, fits into the bulb.
What is the Dermal Papilla
Middle layer of fibrous protein core formed by elongated cells containing melanin pigment.
What is the Cortex
As newly formed cells mature, they fill up with a fibrous protein, then move upward, lose their nucleus, and die.
What is keratinization
Long, coarse, pigmented hair found on the scalp, legs, arms, and body is known as.
What is Terminal
This treatment has been scientifically proven to increase hair growth and is approved for that purpose by the Food and Drug Administration
What is Minoxidil and Finasteride
Tiny, involuntary muscle at the base of the hair follicle.
What is Arrector Pili Muscle
The scientific study of hair, its diseases, and its care.
What is Trichology
Carbon-51%
Oxygen-21%
Hydrogen-6%
Nitrogen-17%
Sulfur-5%
What is COHNS Elements
Canities is the technical term for...
What is Gray hair
Short, fine, downy unpigmented hair is known as
What is Vellus
Oil glands in the skin connected to their follicle.
What us the Sebaceous Glands
Two main part of the hair.
What are the hair root and the hair shaft
The chemical bond that joins amino acids to each other is called.
What is the Peptide bond
What type of hair is caused by the absence of melanin.
What is Gray hair
In the cortex, a side bond that is easily broken by strong alkaline or acidic solutions is a called
What is Salt